There could also be other characters from Hogwarts, like Neville or Ginny. Neville might be more accepting of Harry's change, as he has his own experiences with being different. Ginny could be in a unique position as she has a special relationship with Harry. She might be one of the first to notice the change in Harry and could have her own thoughts and feelings about it, either positive or negative.
Yes, there might be. The world of fanfiction is vast and diverse. With the popularity of both Harry Potter and Avengers, it's not uncommon for fans to create crossovers where characters from different universes interact in unique ways. Luna's quirky and unique personality could lead to some interesting scenarios if Harry Potter were to act like her in an Avengers - related setting.
Peter Pettigrew is a very likely character to be involved in more acts of betrayal in fanfictions. Since he already betrayed James and Lily Potter in the original story, it's easy to imagine him continuing his traitorous ways. Another could be Draco Malfoy. In some fanfictions, he might be made to do more extreme acts of betrayal rather than just being a bully. He could be forced to betray his schoolmates in a more serious way for the sake of his family's safety.
In such a fanfiction, Harry Potter, emulating Luna, would bring a touch of the magical and the eccentric to the Avengers' world. He'd probably view things from a different perspective, not as a typical hero but more like an otherworldly observer. He could befriend the Avengers in an unexpected way, perhaps by seeing through their tough exteriors to their insecurities. His actions might be based on Luna - like intuition rather than the more straightforward heroics of the Avengers. He could also introduce elements of magic that would completely baffle and intrigue the Avengers.
One possible plot could be Harry starting to share Luna's unique views on magical creatures. For example, he might start believing in the existence of some of the more obscure creatures Luna is fond of, like the Crumple - Horned Snorkack. This could lead to him going on adventures to find evidence of these creatures, much like Luna would do.
A third common theme is self - discovery. Harry, by acting like Luna, discovers new parts of himself. He might find that he has a more spiritual or intuitive side that he wasn't aware of before. This can be a journey of personal growth for him, and in the process, he might also help others around him to grow and change as well.
Other Hogwarts students would be affected too. Those from non - pureblood families might start to fear or resent Harry. And the pureblood students like the other Slytherins might either welcome Harry into their exclusive circle or be suspicious of his sudden change. The teachers at Hogwarts would also have to deal with this new Harry, and some might be disappointed in his transformation.
There's also 'When Harry Met Luna's World' which is quite interesting. In this fanfiction, Harry starts to act like Luna after an encounter with a strange magical artifact. He begins to see things from a different perspective, much like Luna does, and it creates some really funny and heart - warming situations in the story. For example, he starts talking to thestrals in the same way Luna might, which amuses his friends and confounds his enemies.
The main characters are Harry and Luna. Harry, being the famous Boy Who Lived, brings his experience of fighting dark magic and his Gryffindor courage. Luna, with her dreamy and perceptive nature, offers a different perspective. Their baby is central to the story as it drives the plot, whether it's about protecting the baby, nurturing its magic, or exploring its unique place in the wizarding world. And of course, their friends from Hogwarts play supporting roles, adding more depth and relationships to the story.
Obviously, Harry would be the main character. Since it's about him being a Saiyan. And I think some of his friends from the Harry Potter series might also be important characters, like Hermione and Ron. They could react to Harry's new Saiyan identity in different ways.
Obviously, Harry would be the main character as the title implies. But other characters like Hermione and Ron would also be important. They could either be part of Harry's regime, reluctantly or wholeheartedly, or they could be part of the resistance against his dictatorship.